I don’t know how you did the fresnal effect for reflections, but it looks pretty dang strong on a number of surfaces. It gives an odd metallic effect in some areas.
There is an easy way to fix this for those who don’t want to try their hand of using a node setup to make a better fresnal mask, and that is by using the Principled Shader Node (which takes care of common materials in a correct manner).
Yes one of those things it is easy to forget is the Fresnel bypass trick for rougher surfaces. The wall behind the sink was particularly fierce. I will eventually get around to learning the principled shader, it is on my bucket list, meanwhile here is an update where I have re-worked some of the worse offenders. Thanks for your comments